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收集分析了浙江省6a的火情监测与记录,及相应的环境林分信息,如坡度、树种、龄级、郁闭度、林地权属,整理分析了火、植被以及人为环境梯度间的关系。结果发现,浙江省火损失的格局,呈现明显的时空分布特点。淳安县、开化县、龙泉市等地的林火损失最高,义乌市、永康市、江山市等地区居中,而余杭市、余姚市、海宁市等地的林火损失最低。而且,主要的火损失发生在2月至4月,以白天10-17时的火损失最大。火季(2月至4月)晴冷干燥,中等程度温度和降雨加上冬日积累的枯枝落叶及加剧的人为活动及火源,造成了主要的森林蓄积量损失。在各种权属的林地中,集体所有林地的蓄积量损失最多,约占总损失量的80%。各林种中,松树最易着火,由此造成的总损失量也最大,火的数目与林木蓄积量损失约占总量的60%。研究可以为森林规划和经营提供参考。
The monitoring and records of fires in 6a of Zhejiang Province were collected and analyzed, and the corresponding information of environmental stands, such as slope, tree species, age class, canopy density and ownership of forest land, were collected and analyzed to analyze the relationship between fire, vegetation and artificial environment gradients . The results showed that the pattern of loss of fire in Zhejiang Province showed obvious spatial and temporal distribution. The highest loss of forest fire occurred in Chun’an County, Kaihua County and Longquan City, with Yiwu City, Yongkang City and Jiangshan City among others, with the lowest loss of forest fire in places such as Yuhang, Yuyao and Haining. Moreover, the major loss of fire occurred between February and April, with the largest loss of fire at 10-17 during the day. Cold and dry seasons (February to April), moderate temperature and rainfall combined with litterfalls accumulated during the winter season and increased anthropogenic activities and sources of fire contributed to the loss of major forest stocks. In all kinds of afforested woodlands, the most accumulated loss of collectively-owned woodlands accounts for about 80% of the total loss. Among the forest species, pine is the most likely to catch fire, resulting in the largest total loss, with the number of fires and the loss of forest volume accounting for about 60% of the total. Research can provide reference for forest planning and management.